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E. P. CHAPPELL. BLIND FASTENER.

No. 599,222. Patented Feb. A15, 1898.

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EZRA PUTNAM CHAPPELL, OF MOBILE, ALABAMA.

BLlNDuFASTNER.

SPECIFICATION forming part of Letters Patent No. 599,222, dated February15, 1898. Application filed June 18, 1897. Serial Nol 641,230. (Nomodel.)

To @ZZ whom t may concern.:

Be it known that I, EZRA PUTNAM CHAP PELL, of Mobile, in the county ofMobile and State of Alabama, have invented certain new and usefulImprovements in Devices for Blinds; and I do hereby declare thefollowing tobe a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

The invention relates to improvements in blind or shutter fasteners.

The object of the present invention is to improve the construction ofblind or shutter fasteners and to provide a simple, inexpensive, andefficient device designed to be mounted on a window-sill in position forengaging the latch hook or pin on a blind or shutter and capable ofautomatically preventing the blind or shutter from being opened from theoutside.

In the drawings, Figure 1 is a perspective view of the improvedfastener` and the baseplate to which the same is secured for attachmentto the windowsill. Fig. 2 is a similar view of the fastener adapted tobe attached iiatwise to the sill, and Fig. 3 is a perspective view ofthe spring-plate from which the latchfastener is formed.

' 1 indicates a narrow plate or strip of spring metal, preferably ofsteel, and provided near one end thereof with a hook 2, formed byslitting the metal and upbending the same substantially in the shapeindicated, the outer face of said hook beinginclined or beveled, asindicated at 3, to permit the passage inward of the hook or pin on theblind or shutter, the inner upright face of said hook being adapted toengage and firmly hold said latch or pin after the same has passed overthe inturned face 3. The opposite end of the plate is provided with alongitudinal slot 4, in which the hook 2 is adapted to move when theplate has been bent into the loop form shown in the perspective viewsFigs. 1 and 2. Bent into said form, the loop-bend of the spring-plate inFig. 1 is shown attached to an upright 7, formed on the base-plate '6,made, preferably, in the form of a casting, with the upright 7 integralwith the base and arranged centrally thereof, said base-plate beingprovided with suitable perforations adapting it to receive screws forfastening it to the window-sill. This base-plate in the constructionshown in Fig. l is made tapering toward its inner end, its lower faceconforming to the inclination of the window-sill and bringing the upperface of the base-plate into a horizontal plane for supporting the loopin a horizontal position. The loop is riveted to the upright 7, asindicated at 9, and has its outer ends (indicated at 10) made to divergeor flaring sufficiently to insure the admission of the shutter latch orpin between them.

In Fig. 2 the loop-spring is shown with its arms in a horizontalposition, one over the other, to adapt them to engage a staple or hookarranged flatwise on the shutter, the construction of the fastenerotherwise being the same as that shown in Fig. 1. In this construction,however, a block 11 of iron or wood isv interposed between thespring-fastener and the window-sill for raising the fastener slightlyabove said sill, the spring and the block 12 interposed between its armsand the loop of the spring being secured to the same by through-screws13 13, as shown.

In the construction shown in Fig. 1 the piw oted latch of the shutterpresses the hook outward away from the slotted arm for allowing thelatch to pass over the inclined face of the hook for engaging its rearend, after which the arms of the spring are retracted by the tension ofthe spring and serve to hold the latch firmly engaged with the hook 2,so that no amount of disturbance or pulling upon the outside of theshutter can disengage the latch from said hook 2, and in order torelease the latch, which has to be done from the inside, the arms of thespring must be forced apart for that purpose, either by hand or by meansof a key interposed between the arms of the spring.

The action of the arms of the spring in the construction shown in Fig. 2is the same as that in Fig. 1, the only dierence being that the staplefor engaging the hook 2 is arranged iiatwise and passed between the armsof the spring, correspondingly arranged.

The fastener thus constructed is adapted to be applied to blinds andshutters in common use and is light, durable, and inexpensive inconstruction and thoroughly effective in operation.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is j l. In a blind or shutter fastener, aloopshaped spring, the ends of the arms of Which are made flaring, onearm having a hook formed integrally with said spring, and the other armslotted to receive said hook, and a base-plate engaging the loop end ofsaid spring and adapted 4to be secured to the window-sill, substantiallyas described.

2. A blind or shutter fastener comprising a pair of substantiallyparallel spring-arms, one of the arms being provided With a slot and theother arm having at its inner face a hook projecting through the slotand presenting'a beveled or inclined front edge, said arms beingreversible to bring the hook into a vertical or horizontal position,substantially as described.

3. A blind or shutter fastener consisting of the loop-shaped springconstructed of a single strip of resilient material and composed of apair of substantially parallel arms, one of the arms being provided witha slot and the other arm having an integral hook presenting an inclinedor beveled front edge and formed by slitting the metal and bending itupward, said hook extending from the inner face of its arm andprojecting through the slot of the other arm, substantially asdescribed.

, In testimony whereof I have signed this specication in the presence oftwo subscribing Witnesses.

EZRA PUTNAM CHAPPELL.

Witnesses:

CHAs. K. HOLT, B. F. JACKSON.

